a consumer product magazine recently ran a story concerning the increasing prices of digital cameras. the story stated that digital camera prices dipped a couple of years ago, but are now beginning to...

a consumer product magazine recently ran a story concerning the increasing prices of digital cameras. the story stated that digital camera prices dipped a couple of years ago, but are now beginning to increase in price because of added features. according to the story, the average price of all digital cameras a couple of years ago was $215.00. a random sample of cameras was recently taken and entered into a spreadsheet. it was desired to test to determine if that average price of all digital cameras is now more than $215.00. what null and alternative hypothesis should be tested?